Method of waterproofing fabrics



Patented Oct. 15, 1929 UNITED STATES PATENT OFFICE KENNETH B. CHURCH, OFNORWICH, CONNECTICUT, ASSIGNOR TO THE ASPINOOK COM- PANY, OF JEWETTCITY, CONNECTICUT, A CORPORATION OF CONNECTICUT METHOD OF WATERPROOFINGFABRICS No Drawing.

This invention relates to a method or process of treating fabric whereina colored or printed product is provided which is water- *as the clothbefore its treatment.

A still further object, more specifically, is to provide a processormethod of treating cloth whereby a duplex effect is produced for causingthe cloth to present a different appearance on each side. I

' In carrying out the objects of'the inven-' tion, a piece of cloth ofany desired size may be used, as for instance, a piece of ordinary twillcloth which is first dyed or printed by the regular process of dyeing orprinting or in any preferred manner. This cloth is then given one coatof pyroxylin on one side after which it is subjected to a finishingaction, as

for instanc'e, by a Schreiner roll which gives the desired impressionupon the reverse-face. The cloth is then returned to the coating machineand given two more coats of pyroxylin on the coated surface. It isevident, however, that more or less coats could be provided withoutdeparting from the spirit of the invention and also the finishing may bedone as desgrilaed or after all the coats have been ap- 1e P By applyingthe coating on one side the goods are reversible and thereby adapted formany uses, as for instance, raincoats, where the coated side may beexposed to the weather and the machine finished side will take the placeof the lining and have the appearance of the same. The pyroxylinsolution may be" colored or clear as desired. By applying a coating ofthis solution on one side of a piece of cloth and providing an embossedlining finish on the other, a duplex effect on one fabric is the result.

Preferably, the pyroxylm coating is a solulpplication filed April 17,

1926. Serial No. 102,808.

tion of nitrocellulose, solvent, plasticizers and gums. This coating ispreferably applied in the regular type coating machine or in any otherconvenient manner. On the uncoated side, the desired effectis producedby running the cloth through a pressure calender under a hot engravedsteel roll on which lines or other suitable designs have been engraved.This ng the clothja preliminary coating of pyroxylin on one surface,subjecting the other surface to an impression roller under pressureuntil a desired impression has been formed on said other surface, andfinally applying a second coating of pyroxylin over the first coating.

KENNETH R. CHURCH.

